LINQ

http://www.java2s.com/Code/CSharp/LINQ/CatalogLINQ.htm

http://code.msdn.microsoft.com/101-LINQ-Samples-3fb9811b

Split Comma Separated String and Filter

if (Session["_sTagno"] != null)
                {
                    string ss = Session["_sTagno"].ToString();
                    var list = ss.Split(',').Where(s => !string.IsNullOrEmpty(s) && s != lblTagNo.Text).Distinct().ToArray();

                    string res = String.Join(",", list);
                    Session["_sTagno"] = res;

                }


ORM

http://codetunnel.com/blog/post/introduction-to-entity-framework-part-i-object-relational-mapping



passing multiple command Arguments To Obout Grid (Client Side)
 CommandArgument='<%# Container.DataItem["RefNo"]+","+ Container.DataItem["EntNo"] %>'


Find The button inside Template Obout Grid (Server Side)

 Button View = (Button)grdReqPurchaseHistory.Templates[0].Container.FindControl("View");


 Passing Arguments On Button Click (Client Side)
 onclick='<%# String.Format("setGridInEditMode({0});",  Container.DataItem["RefNo"]   ) %>'

   <script type="text/javascript">
        function setGridInEditMode(rec) {
            alert(rec);
        }
   
    </script>

 On Row Click Of Grid
 <OboutGrid:GridTemplate runat="server" ID="GtRow1">
<Template>
<table>
<tr onclick="RefreshDataGrid1(this)" id='<%#String.Format("{0},{1}",Container.DataItem["ItemTrnLineID"],Container.DataItem["OrderNo"]) %>'
 style="cursor: pointer">
<td>
<%# Container.DataItem["refNo"]%>
</td>
</tr>
</table>
</Template>
</OboutGrid:GridTemplate>

 <OboutGrid:Column DataField="refNo" HeaderAlign="left" Align="left" Width="10%" HeaderText="Ref Nos">
                                                    <TemplateSettings TemplateId="GtRow1" />
                                                </OboutGrid:Column>



java Script

 function RefreshDataGrid1(a) {

                document.getElementById("ctl00_contentHolder_hfItemTrans").value = a.id;
                $get('ctl00_contentHolder_btnEdit').click();

            }


   <div style="display: none">
                    <asp:Button runat="server" ID="btnEdit" OnClick="btnEdit_Click" />
                </div>

 protected void btnEdit_Click(object sender, EventArgs e)
    {
        str = hfItemTrans.Value.ToString().Split(',');
       // BindBrandGridView(Convert.ToInt32(str[0]), "", "", "", true, false);
   //BindGrid
    }

 Linq

Select Columns from DataTable in Linq

var query = DataTable_Name.AsEnumerable().Select
            (r => new
            {
                ColName1 = r.Field<string>("ColName1"),
                ColName2 = r.Field<int>("ColName2"),
                
            }).ToList();

  ddlRiskLevels.DataSource = query;

 ddlRiskLevels.DataBind();